Sheet-laying-on machine



Nov. 10, 1931. c. c. J. WEBER I SHEET LAYING-ON MACHINE Filed Jan. 25,1929 3 SheetsSheet 1 Nov. 10, 1931. c. c. J. WEBE 1,830,818

SHEET LAYING-0N MACHINE Filed Jan. 25. 1929 5 Sheets-Sheet 2 6. C 15. fzzer Nov. 10, 1931. c. c. J. WEBER 1,830,818

SHEET LAYING-ON MACHINE I Filed Jan. 25. 1929 s Sheets-Sheet a 4 2 2My!) J m-i Patented Nov. 10, 1931 CARL CHRISTiEALlZ' JULIUS WEBER, or'onnnsn, DENMARK SI-rEET-LAYING-ON' MACHINE Application filed January25, 1929, Serial No. 334,884, and in Germany Jenner 30; 1928,

,6 an apparatus for advancing-the sheet thus.

in known manner to rubv up freed to a printing machine, ruling machine:or the llke. The inventlon consists essent1al ly in this that thefreeing apparatus is provided with a rubbing-up roller which serves abulge, in the uppermost sheet of the pile, and with two fingers whichalternately press against the; upper side, of the pile, the-onefingeracting on the uppermost sheet during the rubbingup processlwhilsttheother finger acts on that part of the next uppermost sheet. which hasbeen bared by the uppermost sheet having been moved forward in beingrubbed-up.

The rubbing-up roller consists of or is covered onits periphery withrubber or" the like which has a high coefficient of friction to paperand the like. It is pivotally arranged, in hearings in an arm which caneither be raised or lowered, whereby theroller is, lifted up from orgoes down ontothe uppermost. sheet, or is pushed with a rectilinearmovement forward and backward, Inthe former, instance the rubbing-uproller is intermittently set into rotation at the moment the rollercomes into contact with the uppermost sheet, and the rotation proceedsby aid of a pawl gear of somesuitable form. Inythe latter instance thefreely revoluble rubbing-up roller is, caught at the moment, therubbingup shall be performed. The roller will therefore drag on theuppermost sheet and will thereby pull the same along, whereby therubbing-up of the bulge is effected.

As a rule the apparatus is fitted at theone or at both back, corners ofthepile of paper, and on the bulge being rubbed up the respective cornerof the uppermost sheet, is pulled, forward a little whereby a smallarea, of the next uppermost sheet isbared. Onto this small bared areathe one of the two fingers will immediatelystrike down and thereby thenext uppermost sheet. and thus the whole pile will be held in positionwhilst the.

uppermost sheet is being advanced.

The apparatus may be fitted with av bulge;

limiting member, i. e. a member which during the rubbing-up operation ispressedjdown, onto the uppermOS J sheet in front of the rubbing-uproller, and which prevents, the

bulge from. spreading in a horizontal; dire tionfThis-function may be.performed'hy the finger acting on the uppermostisheet.

The apparatus, serving to advance the freed sheet consists of, two; ormorejrollliers of rublser or the like which, at suitable moments arerendered dragging whereby the: sheet is dragged along and is with itsfront edge introduced into a feeder which takes: itto such place whereitshall be used. V

The two apparatus are driven 'ach by its own backwards and" forwardsrocking, haft. which arehoweverg, conne t dto one another: and aredriven by a common motor.

In the; a companying drawings: a number of constructional formsareshown, in; which;

Fig. 11 shows a machine of the kind described, in side elevatiom partlyin section,

Fig. 2 the. same, seen, from above, Fig. 3 isasideelevation of thesheettfreeingapparatuson a larger scale,

F i'g; 4 the same, seen fromabove, Fig. 5 shows anotherconstructionallform, of the sheet freeing apparatus, in side view, Fig.6is thev same, seen from above, i Fig. 7 is athird constructional,form-offthe' sheet, freeing apparatus, in side View, Fig. 8 is the same,seen from above,

Fig. 9 is a fourth constructional form of the sheet freeingitjpparatuain side iew, Fig. 10 the same, seen from above In. thedrawings the numeral 1, indicates. two, parallel walls on the top, ofwhich there, are two slidesf3 which are connected to, each: other bymeans of a bolt 4, and which can be. slid by aid. of suitable means.along the Walls and fixed thereto In the two, slides there are providedbearings for a rocking shaft 5, which by meansof a suitable motor is putinto a rocking movement the motor driving a'shaft 6 witha disk 7 which,is connected to the rocking shaft by means of, the, following mechanism.

On the walls 1' th re are fitted suitable bearing'blocksffia withbearings for a revoluble "shaft lying across the walls; and

carrying a lever 9 which by means of a connecting rod 10 is connected tothe disc 7. The lever 9 has a slot 11. On the one of the walls 1 thereis a pin 13, around which pivots a lever 14, 15, the one arm 14 of whichhas apin 12 sliding in the slot 11, while the other arm 15 of theleveris connected by means of a connecting rod 17 to an arm 16 on therocking shaft, which connecting rod 17 consists of two sectionsadjustable relatively to each other, so that its length can be variedrelatively to the momentary position of the slides 3 on the walls. lVhenthe con necting rod 10 is moved from the right to the left (Fig. 1), thearm 16 will be turned in the dire: tion from left to right, and when thedisc 7 revolves continuously, the shaft 5 willthus rotate forwards andbackwards, i. e. rock to and fro.

fBetween' the walls there is arranged a horizontal, plane table 18 onwhich lies the pile of paper 19 from which the sheets shall be freed oneby one and be advanced one sheet at a time to the machine, e. g. aprinting ma-' chine or a ruling machine, in which the sheet shall befurther treated.

The sheet freeing apparatus. Figs. 1-4 To the rocking shaft 5 thereispivotally fitted a block 20 to the underside of which there is securedan arm 21a which with a foot formed like a finger 21 can step down ontothe top of the pile, and the block thus rests partly on the rockingshaft 5, which during the operation of the machine is turned to and fromin a bore in the block, and partly on the pile 1 9. I The upper side ofthe block is plane and on'it there lies a slide 22 which can be slid toand fro on the block, guided by two pins 24 fitted in theblock whichpins engage in a slot 26 in the slide 22. The back end of the latterextends beyond the. back edge of the block and has a hole 28, throughwhich there is passed an arm 30 which grips the rocking shaft and has atooth or the like which engages into a continuous groove 32 in therocking shaft so that the arm 30 will follow the rocking motion of thelatter whereby theslide 22 is thus slid to and fro on the block. To theside of the latter there is secured a pin 34 which serves as fulcrum fora doublearmed lever 36, 38. The arm 36 has a bearing 40 for a revolubleshaft 41 on the one end of which there is fitted a disk 42 covered withrubber or the like, and on the other end a pawl wheel 44 into whichengages a pawl 46 fitted on an arm 48 pivoting on shaft 41, which arm isby means of a connecting rod 50 connected to the arm 30.

On the other arm 38 of the double-armed lever there is an adjustable cam51, the upper edge of which, which has a suitable forward incline, bearsagainst aroller 52 on. a pin on the slide 22. When the slide 22 is movedto the right (Fig. 1) the roller 52 will therefore act on the cam 51 andthe arm 38 will be pressed downwards whereby the roller 42 will belifted up from the pile 19 and its is secured to an adjusting screw 56which is passed through a fixed arm 58 on the block 20' and'has a nut60.

At the side of block 20 there is an arm 62 engaging with an eye aroundthe rocking shaft 5, said arm being bent along the upper side of theblock 20 and thereafter down along its front edge, whereit carries afoot 64 adapted to step on to the top of the pile 19 and to actalternately with the finger 21. The foot 64 has a semicircular crosssection and can be turned-around a vertical pin on arm 62 so that it canbe made to assume a suitable inclined position relatively to the shaft41.

The weight of the arm 62 is supported by a spring 66 the upper end ofwhich is secured to the blook20, and on the top of the said arm there isa cam 68. a pin with a roller 70 which will when the slide is moved tothe left (Fig. 1), ride up the cam 68, whereby the arm 62 with finger 64is'pressed down. When the slide 22 is again moved to the right, the. cam68 will be free of the roller 7 O and the spring 66 will now lift thefinger 64.

Sheet advancing apparatus. Fz'gs; J and 2 In the bearing blocks 8a (Fig.2) there are above the bearings for the shaft 8 provided bearings for ashaft 74 on which there is rigidly fitted a fork '76, between the twobifurcationsof which there are bearings for a revoluble shaft 78 to theends of which there are fitted two or more disks 80 covered with rubberor the like and a pawl wheel 82 into which latter a pawl 84 engagesfitted to an arm 86 pivoting on shaft 78. To this arm there ispivoted aconnecting rod 88 which is secured to anarm 90 fitted on the shaft 8.

Immediately in front of the table 18 and on a level with the uppersideof the pile of sheets there are arranged two parallel rollers 92 whichlie the one above the other and are kept in continuous and rapidrotation in the directions shown by the arrows in Fig. 1.

The above described devices cooperate in the following manner: The sheetfreeing apparatus is adjusted in such a manner that the roller 42 isclose to the upper back corner of the pile 19, as shown in Fig. 2, andthis adjustment is performed by shifting the slides 3 on the walls 1 andthe block 20 on the rocking shaft 5.

In the position of the devices shown in the drawings (Figs. 1 and 2),the rocking shaft with arms 16 and 30 is in its one extreme position,and the arms 9 and 90 are in their extreme position correspondingthereto. The

On the slide there is resume rubbing-mp roller 42 and the finger 64 are.

raised from the pile 19 into theuppermosti area of the next uppermostsheetonto which steps the finger 21 which for the moment. bears thegreater part of the weight of the block 20 so that the next uppermostsheet is held in position and the pile is steadied.

The pawl-gear for the rollers of the ad' vancing apparatus is ready toturn these in the direction of the arrow whereby the up permost sheetwill be advanced to the left so that the sheet can be seized-by the feedrollers 92 which will immediately take it away from the pile so that thenext uppermost sheet will now become the uppermost.

This taking away of the uppermost sheet occurs as soon as the arm 9 isbeing moved tothe left by aid of the connecting rod 10, the pawl gear82, 84, 86 imparting to the roller 80 the rotation necessary therefor.

Simultaneously as the arm 9 is turned, also the arm 14 is turned, itspin 12 sliding in the slot 11 and the shaft 5 is thereby turnedcounter-clockwise. The arm 30 will then move the slide 22 to the leftwhereby the roller 52 will roll down the inclined edge of cam 51so'thatthe lever 36, 38 now can turn until the rubbing-up roller 42 again stepsonto the now uppermost sheet 19a of the pile. By the movement of the arm30 the arm 48 with the pawl 46 is turned, and the latter slides over theteeth of the pawl wheel 44.

' When the slide 42 is pushed to the left the roller 70 has rolledup thecam 68 whereby the arm 62 with the finger 64- has been pressed down. thespring 66 being tightened. The relative dimensions are chosen such thatthe finger 21 is lifted from the uppermost sheet at the moment thefinger 64 goes down on it, and the respective members will then assumethe hereinbefore described position in which everything is ready forrubbing-up a bulge in the uppermost sheet, when the rocking shaftreaches its other extreme position.

WVhen the rocking shaft thereafter moves back towards the first extreme.position shown in the drawings, the following will occur: The arm 48will with the pawl 46 immediately carry along the pawl wheel 44 wherebythe rubbing-uproller 42 will be turned clockwise and a bulge 19?) willtherefore be rubbed up so that behind the roller 42 a piece of the nextuppermost sheet is bared.

During the rubbing-up processthe finger 64 will continuously step on theuppermost sheet a small'distance in front and slanting to the right(Fig. 2) of the rubbing-up roller so that the finger lies slantingacross the corner of the sheet, and the finger will therefore, besidesas finger, serve to limit the spreading of the bulge, what has proved inpractice as being of. great importance for the freeing of the sheet fomthe-pile. v

I When the armBQ has, however, moved the slide 22' so far to. therightthat the roller 7 0- hasv rolled down the, cam'68, the spring 6.6

will immediately raise the arm 62. with the finger 64 whereby the weightofthe-block 20 will be transferred to. the finger 21 which at once stepsdown onto the bared part of the next uppermost sheet, and which is nowthe only active finger. At the. same time the roller 52 will roll uponto the bevel'edge. of; the cam 51 whereby the rubbing-up roller 42 islifted.

The arm 90 on the shaftS has during this L:

period of movement. travelled, counter-clockwise and the pawl 84 hasmoved free over the teeth in the pawl wheel 82 so that all 1nov-- ableparts will now again assume. the initia position shown in Figs. 1 and 2.

On the rocking shaft there can be freely revoluble the arm shown in Fig.10, which arm 100 bears an auxiliary finger 102which is pressed on theuppermost sheet close to the back edgeof the pile and immediately at theside of the finger 64, as being under action of a spring 104 which isfittedto the shaft The eye of the arm 100 encircling the rocking shaftis held in its position by two collars 106 fixed to the rocking shaft.The one a of the-said collars bears an arm 108 which with a bend passesin under the arm 100, so tha; the latter and thus the auxiliary finger102 can be lifted at a suitable moment by the clockwise stroke of therocking shaft, whilst the auxiliary finger again steps down on the baclredge of the uppermost sheet whenthe rocking'shaft rocks into theopposite direction.

In-the constructional form of the freeing apparatus shown in Figs. 5 and6 the pivoting pin'34 for the lever 36, which'bears the pin 41 of thelever 36 there is a cam 116, which, when the roller 42 is approachingits extreme position to the left, abuts againsta roller 118 on the block20. The cam 116'is so formed that during the remainder of its movementto the left the roller 42 sheet.

is lifted from the uppermost The plane top side of the block 20 isprovided with two uprights 120 which pass through the slot 26 and whichbearshafts for the rollers l22which rest on thetop of the? slide 22' andthereby act to'guide the-travel of the slide. I

The arm 21a of the finger 21 is not fixed t0 the block 20 but encircleswith an eye the rocking shaft 5 and is freely revoluble on the same. Onthe top of arm 21a there is a cam 124 against which abuts a roller 126on the slide 22 during the travel of said slide to the left, whereby thefinger 21 can be pressed against the top of the pile at a suitablemoment. Whenthe roller 126 is not operative on the cam 124, a spring 66will lift the finger from the pile,

The arm 62 of the other finger is likewise pivotable-on the rockingshaft 5 and has a cam 130 on which may act a roller 132 (Fig. 6) tted onthe slide 22. This finger has the shape of a plate 64a which rests onthe uppermost sheet rather close to its back edge. The arm 62 may belifted by. a spring corresponding to spring 66.

The eyes with which the two finger arms grip around the rocking shaftare held up to the sides of the block 20 by aid of two collars 134arranged on'the shaft outside of the eyes (Fig 6) which collars aresecured to the lock 20 by means of projections 136.

In the constructional form of the freeing apparatus shown in Figs. 7and8 the rubhing-up of the bulge is effected in the same manner as inFigs. 5 and 6, the roller 42 being moved together with the slide 22 andbeing lifted while the cam 116 runs on the roller 118 fitted to theblock 20. The finger 21 is, as in Figs. 3 and 4, secured to the block20, whilst the arm 62 of the finger 64a is pivotally arranged on therocking shaft 5. In this constructional form a special bulge limiter isshown which consists of a bar 138 which is fitted to the one arm 139 ofa double armed lever which pivots around a pin 140 on an arm 142 fittedto the block 20. The other arm 144 of the double armed lever is adaptedto be actuated by the one arm 146 of another double armed leverpivoting'on a pin 148 on block 20, the other arm 150 of which may beacted on by a cam 152 on the slide 22.

The rubbing-up roller 42 is rotated by means of the pawl-wheel 44, butthe pawl- 'gear is of a more simple design than that shown in Figs. 5and 6. The pawl 46 is namely pivotally fitted to a pin 154 which isprovided in the block 20. When the roller 42 is moved to the left (Fig.7 the pawl 46, which does not participate in this movement, will hookfast in the pawlwheel 44, whereby the rubbing-up roller 42 turnsclockwise so that a bulge is rubbed-up.

The arm 30 is passed up in the space 26 between two projections 156 atthe side of the slide 22, and the eye with which the arm 30 grips therocking shaft, is by means of a plate 158 connected to a ring 160 whichencircles the rocking shaft and serves to guide the finger arm 62 closeto the block 20.

er 42 and the pawl-wheel 44. The arm 48 with the pawl 46 is pivoted onthe shaft 41 and is by means of a connecting rod connected to the arm 30fitted on the rocking shaft 5. The finger 21 is fixed to the one of theplates 20, while the finger 64, which here at the same time serves asbulge limiter in Figs. 1-4, is arranged on theone arm 162 of a doublearmed lever pivoted on pin 24, the other arm of which is marked 164.

The arms 38 and 164 bear rollers 166 and 168 which can roll on cam disks170 and 172 which are fitted on a sleeve 174 which grips around therocking shaft and engages the groove 32. The sleeve 174 also serves as adistance piece between the two plates 20. The roller 168 is held pressedagainst the cam disks 172 by means of a spring 176 acting on the arm164; The shape of the cams 176 and 172 is such that the rubbing-uproller 42 and the finger 64are lifted and lowered at the right moments.

The one of the two plates forming the block 20 can as before bedisplaced along the rocking shaft and can be adjusted as. desired to thepile 19. The fixing of the place of the block may be effected by a loosering 176 which can be clamped to the rocking shaft by means of a setscrew 98, and which has an annular groove 178 of semicircular sectioninto which can engage a small ball 180 which is secured to a resilientarm 182 on the block 20,. The latter can thus be turned on the rockingshaft- 5 and yet preserve the position close to the ring 17 6 clamped tothe rocking shaft.

By this arrangement the block 20 may be displaced away from the ring 176, as the resilient connection between the ball 180 and the groove 17 8can readily be broken by a simple undoing. The block may thereafter bequite pushed aside and again readily be made to assume its previousposition when it is pushed close to the ring 176 as the resilientconnection is by itself made again.

Gradually as the sheets are taken off the height of the pile19will'decrease and as the top of the pile should always remain in thesame level the table must be automatically raised at the same speed withwhich the height The pin 200 bears further a toothed wheel l andadjustable on the walls (1) of the chlne.

6. In the sheet laying-on machine described in claim 1, the arrangementthatthe rocking shaft (5) for the freeing apparatus has a continuousgroove (32) into which engages a set screw (98) or thelike which isscrewed into an eye on the arm (62) encircling the shaft (5) so that theblock (20) can be shifted along the shaft and the arm (30) can remainpermanently in connection therewith.

7. Sheet laying-on machine as described in claim 1, characterized inthis, that the apparatus for advancingthe sheets freed consists of tworollers (80) fitted to a revoluble shaft (78), said roller being made ofrubber or the like, said shaft (78) bearing a pawl wheel (82) and beingjournalled in hearings in a fork (76) which is fitted to a shaft (74)journal ed in bearing blocks (811) on the walls (1) of the machine.while on a sha t (8) iouralled under the shaft (74:) in the bearingblocks (8a) there is fitted an arm (90) by means of which a pawl gear(82. 84. 86. 88) may be actuated, whereby the rollers (80) are revolvedfor advancing the freed she'et,which shaft (8) is a rocking shaft drivenby a suitable motor in opposite time with the rocking shaft (5). 8. Amachine of the character described comprising, in combination, meansforsupthereby and means carried by the block for engagi g the revealedportion of the next succeedin g sheet so as to maintain the stackedsheets in place during the removal ofthe rubbed-up sheet.

9. A machine of the character described comnrising,.in combination,means for supporting a stack of sheets. means for remov- .ing the sheetsfrom the top ofthe stack, oneby one, means for rubbing up a bulge ineach sheet as it is to be removed to thereby reveal the next succeedingsheet. comprising a rock shaft with a block, a slide controlled'by therock sh aft. a pivoted lever on. the block carrving a rubbing-up" wheeland controlled by the slide to cause the wheel toengage the uppermostsheet. means under the control of the rock shaft controlling theoperation of said whee]. for rubbing up the sheet enga ed thereby, meansunder the control of the slide to limit the spread of the. bulge, andmeans for holding the stack of sheets in place during 'the removal ofthe bulged sheet.

10.- In a machine of the character described, embodying means foradvancing the uppermost sheet from a stack of sheets, means for freeingthe'uppermost sheet to be advanced, comprising a revoluble rolleradapted to engage the uppermost sheet and, when revolved,

to rub and bulgeup a portion thereof, re-v vealing thereby a portion ofthe next succeeding sheet in the stack, means for supporting andoperating said roller comprising a rock shaft with a block, a slidecontrolled by the rock shaft, a pivoted lever on theblock carry- H ingthe roller and controlled by the slide to cause the roller to engage thesheet, means controlled by the rock shaft controlling the revolvingaction of the roller, meansunder the control of the slide in cooperationwith the revolving action of the roller for limiting the spread of thebulged-up portion, and means for'engaging the revealed portion of thenext succeeding sheet. I i j 11. In a machine of the characterdescribed, embodying means for advancing the uppermost sheet from astackof sheets, means for freeing the uppermost sheet to be advanced,comprising a revoluble roller adapted to engage the uppermost sheet and,when revolved, to rub and bulge up a portion thereof, revealing therebya portion of the next succeeding sheet in the stack, means forsupporting and operating said roller comprising a rock shaft with ablock, a slide controlled by the rock shaft, a pivoted lever on theblock carrying the roller anclcontrolled by the slide to cause theroller to engage the sheet, means controlled by the rock shaftcontrolling the revolving action of the roller, and two fingerscooperating withthe roller upon the stack of sheets and having alternateoperation, one

finger being under the control of theslide and arranged to act on'theuppermost sheet to limit the spread of the bulge produced by the roller,and the other finger being arranged onthe block to act on the revealed 7portion of the next succeeding sheet.

' 12. In a-v machine of the character described, the combination witharoclzshaft, of a block arranged for movement, a slide whose movement iseffected by the rockshaft slidable upon the block and controllingmeansfor causing movement of the block, a lever mounted to the block forpivoting movement and carrying a rotatable wheel, and means for rotatingsaid wheel from said rockshaft, comprising linkage connected to therockshaft and a pawl and ratchet connection be tween the linkageandrotary wheel.

.' 13'. In a' machine of the character described, a rocksha'ft. a blocksuspended at one end from the rockshaft' and provided at the other endwith a. 'fingeradaptecl to rest on a stack of sheets, a double armedlever pivoted -204 which is in mesh with another toothed wheel 208 onanother revoluble pin 206. On the pin 206 a pivotal lever 210 fits loosewhich by means of a connecting rod 212 is connected to theaforementioned lever which during the working of the machine rocks toand fro on shaft 13 and thus carries the arm 210 along in this movement.

'On the arm 210 there is fitted a pawl 214 pivoting on a pin and adaptedto engage a pawl-wheel216 on the shaft 206. When the arm 210 is turnedclock-wise and when the pawl engages the pawl-wheel, the said wheel:gear will be turned .in the direction of the arrows whereby the table'18 will be raised a sui able distance.

The pawl 214 can be held in the lifted position shown in Fig. l by meansof a small 'double a-rmed lever 218, 220 pivoted on a pin secured to thearm 210 when the arm 220 is at rest on a finger 222 secured to the paw-1214.

A rotatable lever is provided on a pin 224 on the walls of the machinethe one arm 226 of which lever is connected by means of a connecting rod.230 to an arm 228 fitted on the shaft 74, while the other arm 232 bearsa nose 234 which when the arm 232 is moved downwards can come into thepath of the arm 218 when this arm swings to the right together with thearm 210.

When the top of the pile of papers is in its usual level the membersmentioned will assume the position shown in Fig. .1 The arm 210 willrock to and fro without the :pa wl1214 taking-the wheel gear along. Whenthe height of the pile ofpapers now decreases the transport rollers 80will sink a -little whereby the shaft 74 will be turned a little and thedouble-armed lever 226, 232 will :be turned a little clockwise so thatthe nose 234 will come into the path of the arm 218. llhe latter willtherefore turn counterclockwise until it meets a suitable stop and thepawl 214 willthen under the effect of a suitable spring engage thepawl-wheel 216 so thatthe wheel gear is turned'and the table 18 israised so much as corresponds to the stroke of the arm 210. When the arm210 hasbeen reached-thelever 226,232 will again assume the positionshown in Fig. :1 in which the.arm.21 O moves idly.

To the front there is on the frame of the machine a :plate 238 againstwhich the forwardedge of the pile 19 is resting and on the table .18there are at "the one side of the pile-andat its back provided angleplates 240 andi242 which can be adjustedin grooves in the table and canthere befixed correspondingto the Width and length of the pile of paperwith which work is proceeding at the moment.

I claim:

1. .Sheet laying-on machine, which consists partly of an apparatus forfreeing the sheets one 'byone from a pile of paper and partly of anapparatus for advancing the freed sheets one by one to a printingmachine, ruling machine or the like, characterized in this, that thefreeing apparatus comprisesinits construction a mechanism mounted tohaverocking movement and including a lever (36) carrying at one end thereofa rubbing-up roller (42) means for rocking the mechanism and connectionstherewith including a ratchet and pawl for causing rotative movement ofsaid roller, and two fingers (21 and 64) carried by said mechanism toalternate in pressing down on to the top of the pile,(19), the onefinger (64) operating independently and operated from said rocking meansto act on the uppermost sheet while the rubbing-up process isproceeding, and the other finger (21) acting on that part of the nextuppermost sheet which has been bared by the rubbingup process.

2. Sheet laying-on machine as described in claim 1, characterized inthis, that the sheet freeing apparatus consists of a shaft (5) rockingto and fro, which is journalled in bearing blocks (3) on the walls(1)-of the machine on which shaft there issuspended theone end ofa'block (20) theother end of which bears the finger (21) which restsyonthe pile of paper (-19),on which block end there is fitted a pin (34) onwhich a double armed lever (36, 38) is pivoted, the one arm (36) .ofwhich has a bearing for a revoluble shaft (41), which bears-therubbing-up roller (42) and a pawl gear which is driven by an arm on therocking shaft (5)., while on the top ofithe block (20') there is fittedarecip-v .rocating slide (22) which is moved by aid of the arm (30) andwhich bearsa roller (52) which can actuate the arm (38) so that theroller (42) is lifted.

3. In the sheet laying-on v machine described inclaim1,-thearrangementof an arm (62) turnable at the side of the block (20)on the rocking shaft 5) which zarm bears the finger (64) and whichhasacam (68) adaptedto beactuated byaroller (70) fittedon the slide (22),which arm (62) is lifted by a spring (66) fitted in :the block (20)" I4. Sheet laying-onmachine as'described in claim 1,. characterizedinrthi's that the finger (64) consists of a bar or the like withasemi-circular or similar section and which is revoluble on the arm (62)around a vertical axis, whichfinger'canassume an oblique positionrelatively to the shaft (41). v 5. In the sheet laying-on machinedescribed inclaim 1, characterized in this that the support .for thefreeing apparatus. in-- to the block, a revoluble shaft having bearingin one arm of said lever and carrying a rubbing-up roller adapted toengage and bulge up a portion of the topmost stacked sheet, a projectingarm controlled by the rockshaft controlling a pawl and ratchet mechanismfor operating the rubbing-u roller, a slide on the block actuated bysaid projecting arm, and means on the slide for engaging and actuatingsaid double armed lever so as to give said rubbing-up roller a liftingaction.

14. In a machine of the character described, the combination Withapparatus for advancing freed sheets from a stack of sheets, ofmechanism for freeing the sheets for advancement, its constructionincluding a rock shaft with a block, a slide Whose movement is effectedby the rock shaft associated with the block and commanding determinatemovements of the block, a lever mounted to the block for swingingmovement and controlled by said slide, a. rubbing-up Wheel carried bysaid lever, and means for operating said rubbing-up Wheel.

In testimony whereof I aliiX my signature.

CARL CHRISTIAN JULIUS WEBER.

